## College Algebra (10th Edition)

$2$
RECALL: $\log_a{(a^n)} = n, a \gt 0, a \ne1$ Since $25=5^2$, the given expression is equivalent to: $\log_5{(5^2)}$ Using the property above gives: $\log_5{(5^2)} = 2$ Thus, $\log_5{25} = 2$.